rs 
HARPER: SPRING ASPECTS OF COASTAL PLAIN VEGETATION 231 
of Jesup, Folkston, and especially Jacksonville, the vegetation of 
the flat pine barrens has apparently never been described except 
in the most vague and general terms, as it might be by a 
person with no knowledge of botany whatever. And Nassau 
County, Florida, through which I passed for 23 miles, has scarcely 
been visited by collectors or mentioned in botanical literature. 
The following list will give the reader a pretty good idea of 
the prevailing trees and evergreen shrubs of the region under con- 
sideration, but of course only a very small fraction of the herbs. 
TREES SMALL TREES OR LARGE SHRUBS 
72 Pinus Elliottii 
63 Pinus palustris 
59 Taxodium imbricarium 
28 Pinus serotina 
20 Magnolia glauca 
21 Cliftonia monophyila 
21 Ilex myrtifolia 
5 Nyssa Ogeche 
SHRUBS 
68 Serenoa serrulata 
29 Ilex glabra 
t1 Nyssa biflora 
8 Quercus Catesbaei 20 Smilax laurifoli 
7 Pinus Taeda 5 Phoradendron flavescens 
4 Taxodium distichum 4 Sab a 
4 Quercus nigra 2 Pieris nitida 
2 Juniperus virginiana? 
2 Magnolia grandiflora 
HERBS 
20 Tillandsia usneoides 2 Andropogon virginicus 
3 Aristida stricta 2 Cladium effusum 
Besides the branch, creek, and river swamps common to most 
flat pine-barren regions there are two other palustrine types of 
vegetation, characterized by shallow stagnant water; namely, 
cypress ponds, with Taxodium imbricarium and Pinus Elliottii 
the dominant trees, and a lower story of Ilex myrtifolia and often 
Nyssa biflora; and bays (somewhat resembling the pocosins of 
eastern North Carolina), with Pinus serotina or sometimes P. 
Elhottii dominant and a dense undergrowth of large evergreen 
shrubs and vines, such as Cliftonia and Smilax. Pinus Elliottii 
and P. serotina, though sometimes seen together, were usually 
separated. Just what causes the difference in the vegetation 
of these two kinds of depressions is not clear, but it seems prob- 
able that the sand is deeper and the water level more constant 
in the bays than in the ponds; and my recent studies of Florida 
